OnComponentBeginOverlap not working as in doc

Development Programming & Scripting
1

I’ve been trying to learn c++ programming for ue4, and right now I have a problem with overlap detection.
In the C++ programming tutorial, checking overlaping is done by iterating through all objects that are curerntly being overlaped, but with what I’m trying to do I believe that running a function at the time overlaping started would be more useful.

Right now I’m using the base First Person Shooter C++ template.

I’m trying to make the overlapping exactly as described here.

Instead of creating another object, I’m just calling

GetCapsuleComponent()->OnComponentBeginOverlap.AddDynamic(this, &AVRTestCharacter::OnTriggerEnter);

Here’s the function declaration in the header (I’m using the BlueprintCallable macro so I could check that is being recognized in the blueprint view):


UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "Collision")
void OnTriggerEnter(AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult &SweepResult);

And here is the function implementation:

void AVRTestCharacter::OnTriggerEnter_Implementation(AActor* OtherActor, UPrimitiveComponent* OtherComponent, int32 OtherActorIndex, bool bFromSweep, const FHitResult &SweepResult) {
GEngine->AddOnScreenDebugMessage(-1, 15.0f, FColor::Blue, "colisao chamada " + OtherActor->GetName());

	if ((OtherActor != nullptr) && (OtherActor != this) && OtherComponent != nullptr) {
		#if UE_EDITOR
			GEngine->AddOnScreenDebugMessage(-1, 15.0f, FColor::Blue, "Colidiou com o objeto " + OtherActor->GetName());
		#endif
	}
}

I’m using the _Implementation in the function implementation because I couldn’t compile otherwise.

I’m pretty sure the overlapping is happening because I tried to check it using the blueprint OnActorOverlapBeging event on the event graph for the same object.

No idea what to do now about this, any help is appreciated.

2

Have you enabled ‘generate overlap events’ ?

3

Yep, on both. Just to make sure I tried turning it on and off and making the same thing in blueprints, and it worked as expected.

4

How are you setting up your collision object type and response types?

5

Not sure what that is specifically, so I can’t answer that hehe
However, if the overlapping is being detected in bp, shouldn’t it be detected in the code too?

6

Ok so I found out the error. Not sure if it is a bug or a documentation fault, but binding in the constructor DOES NOT actually bind the function, that must be done in another function.